How to organize access to ip camera through VPN?

Question

VPN

Good afternoon! On ubuntu 14.04 pptpd is deployed. The router with a 4g modem works via pptpd - config on the screen Accordingly, we have a white static ip. Port forwarding is configured.
In LAN - to get to the web interface of the camera - go to its ip 192.168.1.188
If we access it from outside - then via ip vpn with port (for example) 5.10.182.17:10050 Forwarding on the server is configured, the web interface of the camera opens, BUT:
1) If we go from LAN, then everything is ok.
2) If from outside, then the web interface opens, but when you click on the take.ms/Ejqvd button to watch the video, an error occurs. What does it have to do without any codes, etc. It looks like this - take.ms/SLmpm
Web interface on asp
Camera - falcon eye

Answer 1

falconeye.su/Products/388/71/videocamera-Falcon-Ey...

RTSP
Main stream - rtsp://IP:554/ch01.264?ptype=udp
Secondary stream - rtsp://IP:554/ch01_sub.264?ptype=udp
falconeye.su/podderzhka/faq